EP4175813A2 - Outil de scellage doté d'un moyen de chauffage - Google Patents

Outil de scellage doté d'un moyen de chauffage

Info

Publication number
EP4175813A2
EP4175813A2 EP21742057.9A EP21742057A EP4175813A2 EP 4175813 A2 EP4175813 A2 EP 4175813A2 EP 21742057 A EP21742057 A EP 21742057A EP 4175813 A2 EP4175813 A2 EP 4175813A2
Authority
EP
European Patent Office
Prior art keywords
material web
sealing
heating
heating element
transport
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21742057.9A
Other languages
German (de)
English (en)
Inventor
Reiner Paul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Food Solutions Germany GmbH
Original Assignee
GEA Food Solutions Germany GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GEA Food Solutions Germany GmbH filed Critical GEA Food Solutions Germany GmbH
Publication of EP4175813A2 publication Critical patent/EP4175813A2/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/42—Heating or cooling
    • B29C51/421—Heating or cooling of preforms, specially adapted for thermoforming
    • B29C51/422—Heating or cooling of preforms, specially adapted for thermoforming to produce a temperature differential
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
    • B65B47/02—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved with means for heating the material prior to forming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/003—Arrangements to enable adjustments related to the packaging material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/02—Arrangements to enable adjustments to be made while the machine is running
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/46—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7861—In-line machines, i.e. feeding, joining and discharging are in one production line
    • B29C65/787—In-line machines, i.e. feeding, joining and discharging are in one production line using conveyor belts or conveyor chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2424—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain
    • B29C66/24243—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral
    • B29C66/24244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral forming a rectangle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/841—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/843—Machines for making separate joints at the same time in different planes; Machines for making separate joints at the same time mounted in parallel or in series
    • B29C66/8432—Machines for making separate joints at the same time mounted in parallel or in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/60—Arrangements for supporting or guiding belts, e.g. by fluid jets
    • B65G15/64—Arrangements for supporting or guiding belts, e.g. by fluid jets for automatically maintaining the position of the belts

Definitions

  • the present invention relates to the sealing or forming tool of a packaging machine. Furthermore, the present invention relates to a packaging machine with a forming station that forms depressions in a lower material web, a heating element heating the lower material web before and / or during deformation, and a sealing station that connects an upper material web to the lower material web and has a heating element for this.
  • a depression is formed in a flat material web, for example a film web, by deep drawing.
  • the material web must be heated with a heating element before deep drawing.
  • the material web is stressed differently.
  • the material web is stretched significantly more than, for example, at the bottom of the trough or in the area of the sealing seam.
  • thicker webs of material are used, which in particular has a disadvantageous effect on costs, transport and disposal of the packaging to be produced.
  • a sealing or molding tool of a packaging machine having a heating element with a heating plate which is provided on a carrier and covered with a cover element, the cover element being connected to the carrier by means of a plurality of connecting means.
  • This object of the present invention relates to a sealing or forming tool of a packaging machine with a heating element which has a heating plate which is mounted on a Carrier is provided.
  • a heating plate in the sense of the invention is not necessarily but preferably a flat two-dimensional object. It can also be arched or shaped differently in three dimensions.
  • the heating plate can be located in the sealing tool and / or in the molding tool and here in particular in the upper tool and / or upstream of the molding tool, based on the transport direction of the lower material web.
  • the heating plate can be connected directly to the carrier.
  • thermal insulation is preferably provided between the heating plate and the carrier, for example made of a very strong, heat-insulating material.
  • the heating plate itself consists at least essentially of thermal insulation.
  • the heating plate preferably consists of a heating film.
  • the latter On the side of the heating element facing the material web to be heated, the latter has a cover element, preferably made of a material with good thermal conductivity, in particular metal, preferably aluminum or stainless steel. There is preferably direct and preferably full-surface contact between the heating plate and the cover element.
  • the heating element therefore preferably consists of a heating plate, a carrier and a cover element, with additional thermal insulation being provided between the carrier and the heating plate or the carrier being at least partially designed as thermal insulation.
  • the cover element is connected to the carrier and / or to the insulation by means of a multiplicity of connecting means.
  • the connecting means are preferably arranged in such a way that there is no contact with the material web.
  • the cover element is preferably a foil or plate, in particular a sheet metal or a sheet metal foil, preferably an aluminum sheet or an aluminum foil, the edge area of which is preferably at least partially flanged or kinked or canted.
  • the cover element is preferably provided as a porous component.
  • the cover element can be manufactured as a 3D printed part.
  • the material thickness, in particular the sheet metal thickness of the cover element is preferably 0.2-2 mm. This area has been found to be particularly advantageous because with a smaller material thickness, in particular aluminum sheet thickness, the cover element tends to warp and / or the heat capacity of the cover element is too low and the desired temperature profile is blurred with a greater material thickness.
  • the connecting means are preferably provided in the crimped / kinked / canted section of the cover element.
  • the connecting means are on the rear side of the cover element, in particular provided on the part of the rear side which extends parallel to the film web.
  • Sleeves and / or bolts and / or nuts are preferably provided on the cover element.
  • the sleeves, bolts and / or nuts are connected to the cover element in particular by a welded and / or adhesive connection.
  • the sleeves can have an internal or external thread.
  • the connecting means are preferably connected with a screw with an internal or external thread. A nail can also be used instead of the screw, but this can have the disadvantage that the connection is more difficult to detach.
  • the connecting means can also be a riveted connection, for example a blind or pop rivet connection.
  • a connecting means within the meaning of the invention is not a material bond.
  • the connection between the covering means and the carrier is preferably provided in such a way that the covering means is tensioned against the heating plate.
  • An, in particular an elastic, heat-conducting layer can be provided between the cover element and the heating plate.
  • the connecting elements are preferably provided according to a grid, in particular equidistantly.
  • the carrier is preferably a thermal insulation material.
  • the carrier and / or the thermal insulation which is provided between the carrier and the heating plate is preferably not in one piece but in multiple pieces, in particular as a plurality of plate segments.
  • the dimensions of at least two segments, preferably of all segments, are preferably identical.
  • a gap is preferably provided between the segments. A gap is particularly advantageous if this makes it possible to prevent the segments from influencing one another as a result of thermal expansion, in particular different thermal expansion.
  • At least one, preferably several channels are provided in the carrier and / or the thermal insulation, through which a gas can be passed in order to suck the material web onto the cover element and / or to blow out a gas with which the material web is formed.
  • the carrier and / or the thermal insulation preferably have at least one cable routing channel. In the case of several channels, these are preferably arranged according to a grid, in particular equidistantly.
  • the cover element can have recesses, in particular in a, preferably uniform, grid, by means of which an underpressure and / or overpressure can be generated between the cover element and the material web.
  • the heating plate is preferably an electrical heating plate, the power supply preferably being passed through the support and any thermal insulation that may be present and / or taking place through the support and / or the thermal insulation, for example inductively.
  • a connecting means is preferably provided on the cover element, which at least partially protrudes through the thermal insulation and / or the carrier and can preferably be connected to the thermal insulation and / or the carrier.
  • the connecting means is preferably located on the side of the cover element facing away from the material web and particularly preferably at a distance from its edge area, preferably in the area of its center or in the area of one or more axes of symmetry.
  • a further preferred or inventive subject matter of the present invention is a sealing or molding tool with which packaging trays or packages of different cross-sections and / or sealing seams with different shapes are produced and which has a heating plate, the heating plate consisting of a conductor track pattern per cavity / packaging to be produced having a plurality of L-shaped conductor tracks.
  • the same heating plate can be used to locally heat material webs so that packaging trays with a different cross-section, i.e. with different dimensions of the packaging in length and / or width, and / or sealing seams with a different shape / geometry can be produced.
  • the circuit board preferably has a plurality of conductor track patterns, each of which has a plurality of conductor tracks, for example straight and / or L-shaped conductor tracks or a combination thereof.
  • bridging elements can be provided at one or both ends, which can be controlled electrically together with the adjacent L-shaped conductor track or separately from it.
  • Several conductor tracks can be controlled individually and / or in groups.
  • Another preferred or inventive subject matter of the present invention is a sealing or molding tool in which the heating plate is made up of a large number of, preferably identical, modules.
  • the heating plate is made up of several modules which are arranged next to one another, preferably in one plane.
  • Each module is preferably rectangular, in particular square.
  • the extension transversely to the transport direction resulting from the modules arranged next to one another is preferably greater than the useful width of the material web.
  • the extension in the transport direction resulting from the modules arranged next to one another is preferably greater than or equal to the preference in the case of an intermittently transported material web.
  • the extension transversely to the transport direction resulting from the modules arranged next to one another is preferably greater than the distance between the transport means, in particular greater than the distance between the clamping means arranged on the transport means and gripping the material web.
  • Each module is preferably individually electrically connected and individually controllable / regulatable.
  • Each module preferably has a grid / pixel pattern of local heating points / pixels, which can each be controlled electrically separately or in groups / as a group.
  • a gap is preferably located between the modules, in particular a gap running around the respective module between the modules of a heating plate. Particularly preferably, this gap is at least partially completely sealed so that none Significant air flow through the gap occurs, in particular in the case of rear-side gassing of the circuit boards, for example with compressed air.
  • the seal between two modules is preferably provided in an elastic manner.
  • the seal is made of a rubber-like material.
  • At least one module preferably each module, preferably has a recess, preferably a circular recess, through which a gas can be sucked off and / or blown in the direction of the material web.
  • Another object of the present invention is a packaging machine with a forming station that forms depressions in a web of lower material, a heating element heating the web of lower material prior to and / or during deformation, and a sealing station that connects a web of upper material to the web of lower material and has a heating element for this purpose, wherein the heating elements of the forming station and the sealing station are constructed at least essentially, preferably completely identically.
  • This subject matter of the present invention relates to a packaging machine for producing a package, in which a sub-material web, for example a plastic film or a material web, which in particular has a cardboard, paper or other layer different from plastic, is unrolled from a supply roll and preferably intermittently / cyclically is transported along the packaging machine in a transport level.
  • a sub-material web for example a plastic film or a material web, which in particular has a cardboard, paper or other layer different from plastic
  • a forming station this lower film web is then initially formed by means of a deep-drawing tool in order to form, for example, a depression and / or a structure, in particular an anti-slip structure, in the lower material web.
  • the forming station generally has a lower and an upper tool, which are moved towards one another for forming and away from one another for further transport of the lower material web.
  • the lower tool is located below and the upper tool above the transport level of the lower material web.
  • several packagings which are arranged in a so-called format, are processed at the same time and then simultaneously transported along the packaging machine.
  • the Bottom material web heated with a heating element.
  • the lower material web is covered with a packaged product, in particular a food such as sausage, ham or cheese, and in a next step closed with an upper film in a sealing station, the upper film usually being sealed to the lower film web.
  • a heating element is used for this, which provides the thermal energy required for sealing.
  • the finished packaging is then separated by cutting the packaging out of the lower and upper material web.
  • the upper material web is also unrolled from a supply roll.
  • a dancer which keeps the tension in the respective material web at least essentially constant.
  • the dancer can be a linear or a rotary dancer.
  • heating elements in particular identical heating plates
  • the heating plates can each be constructed from several modules, in particular identical modules, which are provided next to one another in one plane.
  • the heating elements preferably have identical supports and / or identical thermal insulation and / or cover elements.
  • Another object of the present invention is a packaging machine with a forming station that forms depressions in a lower material web, a heating element heating the lower material web before and / or during deformation, and / or a sealing station that connects an upper material web with the lower material web and a heating element for this and with transport means that transport the sub-material web in one transport direction, the transport means being provided at a distance transverse to the transport direction, and the extension of the heating element transverse to the transport direction> than the distance between the transport means.
  • the extension of the heating element transversely to the direction of transport of the material web is greater than the distance between the two transport means to the right and left of the material web which transport the material web and / or greater than the distance between the clamping means which are provided on the transport means.
  • the heating plate and / or its modules can preferably be controlled in such a way that, preferably at least, the area of the heating element which overlaps the transport means and / or the clamping means is not heated.
  • Another object of the present invention is a packaging machine with a forming station that forms depressions in a lower material web, with a heating element heating the lower material web before and / or during deformation, and / or with a sealing station that connects an upper material web with the lower material web and for this purpose
  • the extension of the heating means transversely to the transport direction of the material web is greater than or equal to the useful width of the material web transversely to the transport direction.
  • the extension of the heating element transversely to the transport direction is preferably greater than the distance between the transport means, in particular greater than the distance between the clamping means which are arranged on the transport means and which grip the material web.
  • the useful width is the width of the material web minus an edge strip on the right and left in relation to the direction of transport, which is required for gripping the material web or for holes for gas exchange.
  • the heating element is preferably controllable in such a way that the area of the heating element that extends beyond the usable width is not heated.
  • Another object of the present invention is a method for producing a package, in particular with the packaging machine according to the invention described here, in which a material web is formed by means of compressed air, the compressed air being blown through the heating plate.
  • the heating element is located inside the molding tool, in particular in the area of the upper tool, and the shaping of the material web into a packaging tray is effected and / or supported by compressed air which acts on the material web from above.
  • this compressed air now flows through the heating plate.
  • the heating plate has, for example, one or more recesses, for example bores.
  • the compressed air flows through one or more gaps between two modules that make up the heating plate and / or through a gap surrounding the outer modules.
  • the compressed air is preferably heated, i.e. it has a temperature> 20 ° C. This heating is particularly preferably effected not exclusively by the heating element,
  • Figure 1 shows schematically the packaging machine according to the invention.
  • Figures 2a-d show different formats of packaging trays
  • FIGS. 3-5 show a further embodiment of the packaging machine.
  • FIG. 6 shows a heating element according to the invention
  • FIGs 7a and 7b show two possible formats
  • FIG. 1 shows the packaging machine 1 according to the invention, which optionally has a forming station 2, a filling station 7 and a sealing station 15.
  • the packaging machine can be a so-called thermoformer or a so-called traysealer.
  • a sub-material web 8, here a plastic film 8 is pulled off a supply roll and transported cyclically along the packaging machine according to the invention from right to left. With each cycle, the sub-material web 8 is one
  • the packaging machine has two transport means 21 (see FIG. 5), in the present case two endless chains each, which are arranged to the right and left of the lower material web 8. Both at the beginning and at the end of the packaging machine, at least one gearwheel is provided for each chain, around which the respective chain is deflected. At least one of these gears is driven.
  • the gears in the entrance area and / or in the exit area can be connected to one another, preferably by a rigid shaft.
  • Each transport means 21 has a multiplicity of clamping means / grippers 22 which grip the lower material web 8 in a clamping manner in the inlet area and transfer the movement of the transport means to the lower material web 8.
  • the forming station 2 has a lower tool 4 and an upper tool 3.
  • the lower tool 4 can, as indicated by the double arrow, be moved up and down, wherein it is moved upward in the direction of the lower material web 8 for forming and downward for further transport of the lower material web 8. In the raised position, the lower material web is preferably clamped between the two tools 3, 4.
  • the lower tool 4 can be arranged on a lifting table 5 which, as symbolized by the double arrow, can be vertically adjustable in order to generate the movement of the lower tool described above.
  • the packaging troughs 6 or the lower material web 8, indicated here, are then covered with the packaged goods 16 in the filling station 7.
  • the adjoining sealing station 15 which also consists of an upper tool 12 and an optionally vertically adjustable lower tool 11, an upper film 14 is firmly attached to the lower material web 8 by sealing.
  • the movement of the lower material web 8 is transferred to the upper material web 14.
  • the upper tool and / or optionally the lower tool are lowered or raised before and after each film transport.
  • the upper film 14 can also be guided in transport means or transported by transport chains, these transport means then only extend in front of the sealing station and possibly upstream. Otherwise, the statements made about the means of transport for the lower film apply.
  • the upper film can also be warmed up and / or deep-drawn with a heating element.
  • a sealing frame is provided as the lower tool 11, for example, which has an opening for each packaging tray into which the possibly present packaging tray dips during sealing, ie when the lower sealing tool moves upwards.
  • the upper and lower material webs are pressed together between the upper and lower tool 12, 11 and combine under the influence of heat and pressure.
  • the tools 11, 12 are again moved vertically apart.
  • a dancer for example a rotary dancer, which keeps the material web 14 at a constant tension as far as possible, can be provided between the supply roll of the upper material web 14 and the sealing tool.
  • a dancer is also preferably provided in the area of the sub-material web 8, preferably downstream of the supply roll.
  • the dancer is preferably a linear dancer.
  • a gas exchange preferably takes place in each packaging tray.
  • the air present in the packaging tray is first partially sucked off and / or replaced by an exchange gas.
  • holes can be made in the sub-material web, through which the air between the material webs 8, 14 is sucked off and / or the exchange gas is blown in.
  • the finished packs are separated, which is done, for example, with the cross cutter 18 and the longitudinal cutter 17.
  • the cross cutter 18 can also be raised or lowered with a lifting device 9.
  • the sealing tool 11, 12 has a punch which cuts through the lower and upper material webs before, during and / or after the sealing.
  • several packs are produced at the same time in each cycle, which are arranged in a so-called format as a matrix. Such formats are shown in FIGS. 2a-2d, 7a and 7b.
  • FIGS. 2a to 2d show four different formats which can be produced when the material web 8 is preferred.
  • the heating element or the packaging machine is preferably provided so that all formats 19 shown here can be produced on packaging trays 6 or packaging without having to replace the heating element 20 in the sealing station 15 or the upper tool 12 or the heating in the area of the forming station.
  • the control of the heating plate is preferably adapted automatically, in particular computer-controlled.
  • FIGS. 3 and 4 show an embodiment of the packaging machine according to the invention.
  • the material web 8 or the material webs 8, 14 are transported to the right and left by a transport means 21, here a chain 21, on which gripper or clamping means 22 are provided, along the packaging machine.
  • the width of the heating element 20 is now provided so that it is greater than the distance A between the clamping means 22 to one another, so that the heating element 20, at least partially protrudes beyond the clamping means or the grippers 22.
  • the heating element 20 is provided in a stationary manner in the present case. For sealing (see FIG. 4) the lower tool 11 is raised.
  • the heating element is preferably provided in such a way that no heating energy is released in the area that covers the transport chain and / or the clamping means 22.
  • FIG. 5 a further embodiment of the packaging machine according to the invention is shown.
  • a material web 8, 14 is transported in the transport direction T along the packaging machine.
  • the material web 8, 14 is gripped in its lateral edge area by a transport means 21, 22 and transported further.
  • the material web has an edge strip 23 on the right and left, which cannot be used for the production of packaging, for this gripping or, if necessary, also to be able to provide recesses for a gas exchange.
  • the material web 8, 14 accordingly has a useful width N.
  • the width B of the heating element ie its extension transversely to the transport direction T of the material web, is provided wider than the useful width N of the material web 8, 14.
  • the heating plate is preferably controllable so that, despite the overlap in the area the edge strip 23 no or only a slight heating energy is released.
  • FIG. 6 shows an embodiment of the heating element that in the present case has a carrier 27, a heating plate (not shown) and a cover element 25, preferably a metal plate, in particular a stainless steel plate.
  • the cover element 25 is located on the side facing the material web.
  • the cover element 25 can have recesses (not shown) through which an underpressure and / or overpressure can be generated between the cover element and the material web to be heated.
  • the negative or positive pressure is accordingly preferably also present between the cover element 25 and the heating plate located behind it.
  • the cover element is preferably crimped or kinked in its edge region. This beaded or kinked area is then connected to the carrier or to the insulation layer which may be present, preferably reversibly, for example by means of screws.
  • the cover element On its side facing the heating plates, the cover element can have a connecting means 24, for example a weld-on bolt 24, which extends at least partially through the carrier 27 and with which the cover 25 can be connected to the carrier, in particular reversibly.
  • the connecting means which is located in a region of the cover element remote from the edge region, can prevent the cover from moving, in particular pulsing or vibrating, away from the heating plate when the material web is heated and / or during sealing.
  • FIGS. 7a and 7b once again show two different formats of packaging trays or packaging that are produced when the material web is drawn. In the left-hand embodiment, four packaging trays and in the right-hand embodiment sixteen packaging trays are produced at the same time.
  • FIGS. 7c and 7d show two possible embodiments of a heating plate with which the formats according to FIGS. 7a and 7b can be produced without converting the heating elements, the heating plate only being shown in one quadrant for the sake of simplicity.
  • the heating plate has a multiplicity of pixels which are preferably distributed uniformly, in particular equidistantly, over the heating plate.
  • the pixels can be controlled and heated individually or in groups so that the desired heating profile can be generated.
  • the pixels are depicted as a grid in the upper left quadrant, which pixels are controlled to produce a packaging tray according to FIG. 7a in such a way that the temperature profile required for production is produced in the material web.
  • the heating plate is preferably made up of modules, in particular identical modules, each of which has a width BM or a length LM.
  • the modules are preferably arranged butted in one plane. In the present case, four modules are shown that form the heating plate.
  • the width BM or length LM can be the same or different.
  • the width BM of the module can be selected so that its multiple does not correspond to the useful width N of the material web 8, 14.
  • One module is preferably used to heat an area of the material web that is sufficient for the production of several packs. Alternatively, two modules are required to heat the material web to produce a single package. Another embodiment of the heating plate is shown in FIG. 7d.
  • the heating plate has a pattern 29 of conductor tracks, which can preferably each be controlled individually or as a group.
  • Each pattern preferably consists of a multiplicity of L-shaped conductor tracks 32. Bridging conductor tracks can be provided at one or both ends of an L in each case. The person skilled in the art understands that these conductor tracks are present in each quadrant of the heating plate according to FIG. 7d.
  • FIGS. 7e and 7f The control of the conductor track pattern 29 according to FIG. 7d is shown in FIGS. 7e and 7f.
  • the four outer L-shaped conductor tracks and the bridging elements located between them are electrically activated, while no voltage is applied to the inner L-shaped elements.
  • the four outer L-shaped conductor tracks but now also the four inner L-shaped conductor tracks are electrically controlled, while the bridging elements in the present case are not supplied with voltage. By simply changing the control, you can switch from one packaging form to the other.
  • FIG. 8 shows an embodiment of the heating element 20 according to the invention, which in the present case has a cover element 25 and a carrier plate 27.
  • thermal insulation 35 is provided between the cover element 25 and the carrier plate 27.
  • the heating modules (not shown) are located between the thermal insulation 35 and the cover element.
  • the thermal insulation is preferably made up of several segments.
  • gas channels 33 are provided in the thermal insulation 35, which are in communication with bores 34 in the cover means. A gas, preferably air, can be sucked in or blown off through one of the gas ducts 33 and the bores 34.
  • the heating plate which is located between the covering means 25 and the thermal insulation, must also be corresponding gas ducts, which are preferably provided congruently with the ducts 33, 34.
  • gas collecting channels are provided in the carrier plate, which conduct a gas to the channels 33 or away from them.
  • the cover plate is connected to the carrier plate by means of screws.
  • packaging carriers 6 packaging carriers, packaging tray, lower shell, tray
  • preheating e.g. upstream of the forming station

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

La présente invention concerne un outil de scellage ou de formage d'une machine d'emballage. La présente invention concerne en outre une machine d'emballage pourvue d'un poste de formage qui forme des cavités dans une bande de matière inférieure, un élément chauffant chauffant la bande de matière inférieure avant et/ou pendant le formage, ainsi qu'un poste de scellage qui relie une bande de matière supérieure à la bande de matière inférieure et qui présente à cet effet un élément chauffant.
EP21742057.9A 2020-07-01 2021-06-29 Outil de scellage doté d'un moyen de chauffage Pending EP4175813A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020208238 2020-07-01
PCT/EP2021/067903 WO2022002968A2 (fr) 2020-07-01 2021-06-29 Outil de scellage doté d'un moyen de chauffage

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EP4175813A2 true EP4175813A2 (fr) 2023-05-10

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EP (1) EP4175813A2 (fr)
BR (1) BR112022026673A2 (fr)
WO (1) WO2022002968A2 (fr)

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Publication number Priority date Publication date Assignee Title
WO2023078797A1 (fr) * 2021-11-05 2023-05-11 Gea Food Solutions Germany Gmbh Élément chauffant à isolation thermique segmentée

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
US3661484A (en) * 1970-02-12 1972-05-09 Mahaffy & Harder Eng Co Automatic container making apparatus
FR2637216B1 (fr) * 1988-10-03 1990-12-28 Formseal Sarl Ste Nle Dispositif de chauffage d'une bande thermoplastique sterilisee
FR2711093B1 (fr) * 1993-10-14 1996-01-26 Acsim Plateau chauffant de thermoformage sous pression notamment de matériaux composites et son procédé de régulation thermique.
DE102006045327A1 (de) * 2006-09-22 2008-04-03 Cfs Germany Gmbh Heizplatte mit einer Vielzahl von Heizpatronen
US20100199520A1 (en) * 2009-02-06 2010-08-12 Nike, Inc. Textured Thermoplastic Non-Woven Elements
JP5846796B2 (ja) * 2011-08-01 2016-01-20 株式会社浅野研究所 熱板を用いた熱成形装置及び熱成形方法
ES2751657T3 (es) * 2015-04-09 2020-04-01 Koch Pac Systeme Gmbh Dispositivo calefactor para calentar una lámina

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BR112022026673A2 (pt) 2023-01-24
WO2022002968A2 (fr) 2022-01-06

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